Device for removing excrescences from pipes.



M. BERLIN.v DEVICE POR REMOVING EXGRBSGENGBS FROM PIPES'.

APPLIGATIONTILED APRJS, 1910.

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MELVIN BERLIN, F COLUMBUS, OHIO.

DEVICE FOR REMOVING- EXCRESCENCES FROM IIPES.

Specification of Letters Patent.

Patented Jan. 10, 1911.

Application filed April 13, 1910; Serial No. 555,165.

To all 'whom it may concern:

Be it known that- I, MELVIN BERLIN, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented a certain new and useful Improvement in Devices for RemovingExcrescences from Pipes, of which the following is a specification.

The object of this invention is to provide a simple, cheap and effectivedevice for reducing excrescences on pipes, tubes or other rod-likebodies so as to impart to them a smooth, regular and normal appearance.

The most important use of the invention contemplated at this time is thereduction of excrescences on boiler tubes. The primary cause of suchexcrescences I understand to be the internal accumulation of lime inspots thereby permitting the excessive heating of the metal of the tubeat such spots and consequently the softening and expulsion by the boilerpressure of the metal of the tube at s uch spots.

'Ihe invention is embodied in the const-ruction and combination of partsshown in the accompanying drawings, set forth in the followingdescription and pointed out in the appended claims.

In the drawings-Figure 1 is a view in side elevation showing the deviceapplied to 'a piece of pipe or tube. Fig. 2 is a vertical section on theline -m looking to the right. Fig. 3 is a vertical section on the line3/-3/ looking to the right. Fig. l is a plan view of one end of the toolsupporting frame.

In the views la designates the tube or pipe to be treated and 5 and 6designate threaded hangers which are adapted to be attached or hung uponsuch pipe or tube by any suitable means. In the instance shown the screw6 has its shank formed with a yoke 6a to fit against one side of thepipe or tube, and to one arm of this yoke is hinged, in the manner asshown at 6b Fig. 3 a strap 6c that fits around the opposite side of thetube while the other arm of the yoke is provided with slotted ear 6dstraddled by forks 6e of the strap 6c. A pin 6f inserted in the ear 6dserves to lock the strap to the yoke. The screw 5 is attached to thetube in the same way but the shank of the screw is divided at 5b to forma knuckle and provided with a hinge pin 5a so that the frame andoperative parts can be swung down and turned around on the screw 5 tooperate on another part of the pipe without removing the connectingdevices of said screw 5.

Upon adjustable nuts/7 on the screws 5 and 6 is supported a rectangularframe 8. The

longer sides of the frame 8 are provided 14E each arm or pawl of whichhas'a tooth l adapted to engage the gear 10 to turn that gear when thepawl is moved in one direction but to slip over the gear when moved inthe opposite direction. The lower arm of the lever 12 is made ratherlong so as to afford a powerful leverage 'and the pawls are operated byoscillating said lever.

In practice the device is secured substantially as appears in Fig. 1 ona tube having an excrescence to be reduced and a trifle behind suchexcrescence. The frame 8 is adjusted upward by the nuts 7 to a planewhere the excrescence will oer an obstruction to the movement of thepressing roller 13 under it. The pawl 14 is placed to en-A gage thatside of the gear'lO which, upon oscillation of the lever 12, will causethe pressing roller 13 to move under the excres` cence. In thisoperation the gears 10 are forced to move in a direction to carry thepressing roller 13 under the excrescence by reason of the racks 9 which`prevent the gears from slipping backward. The pressing roller 13,therefore, acts somewhat like a wedge but with a rolling and squeezingcontact against the excrescence thus forcing the latter toward the axisof the tube. ToV reduce a neighboring excrescence on the tube the devicecan oftentimes have its position properly altered to treat sucheXcrescence by simply removing one of the hangers as before indicatedand swinging the roller with its supporting frame and operating devicesdownward as suggested by dotted lines Fig. l, and then swinging theframe around on the screw 5 to the new position on the opposite side ofthat screw.

It will be understood, of course, that a large or refractory excrescencecan be gradually reduced that is by making repeated passes of thepressing roller against the excrescence and turning up the nuts 7 fromtime to time as the excrescence becomes reduced by the action of theroller.

Although it is practicable to reduce excrescences While in a cold stateit facilitates the operation and secures better results to heat theexcrescence to redness with a blow pipe While subjecting it to theaction of the pressing roller.

YVhat l claim is:

1. In means for reducing excrescences on tubes or other rod-like bodies,the combination ot a pressing roller, an axle therefor, a toothed Wheelsecured to such axle, a rectilinear rack upon Which such toothed Wheeltravels, a lever fulcrumed With reference to said axle, said levercarrying a paWl to engage and move said toothed Wheel and means forsecuring said rack in fixed relation to the tube or rod-like body andthe pressing roller in position to operate on the excrescenee.

2. In means for reducing excrescences on tubes or other rod-like bodies,the combinationl of a pressing roller, an axle therefor on Which theroller freely turns, a toothed Wheel secured to such axle, a rectilinearrack upon which such toothed Wheel travels, a lever fulcrumed withreference to said axle, said lever carrying a paWl to engage and movesaid toothed Wheel, and means for securing said racks in ixed relationto the tube or rod like body and the pressing roller in position tooperate on the excrescence.

3. In means for reducing excrescences on tubes or other rod like bodies,the combination of a pressing roller, an axle therefor, a toothed Wheelsecured to such axle, a rack upon which such toothed Wheel travels, alever ulcrumed with reference to said axle, said lever carrying a paWlto engage and move said toothed Wheel and tivo means including screws 5and 6 for securing said rack in lixed relation to the tube or rod-likebody and the pressing roller in position to operate on the excrescence,one of said means including a hinge connection Whereby the pressingroller and its supporting and operating devices can be swung away fromthe tube or rod when the other is detached.

Ll. In means for reducing excrescences on tubes or other rod-likebodies, the combination of a frame having means for attaching it to thetube or other rod-like body, a pressing roller supported on said frame,a lever mounted to swing with reference to said roller, a dog carried bysaid lever to move the pressing roller and means in connection with theroller and i'rame to guide the pressing roller in a right line,substantially as described.

MELVIN BERLN. lVitnesses BENJAMIN FINoxnL, MAYME FOARD.

